The idea that a commissioner would unilaterally change rules mid-season is just silly. At the very least, if bizarre or unforeseen circumstances arise, it’s on the commissioner to take action when necessary… which means alerting the league to the issue and beginning a group conversation about whatever it is.
As for your two specific issues…
// Scoring rules/settings should never be changed midseason. Ever. Anyone who puts any sort of effort and care into their team has crafted their roster to fit their league’s particular scoring. Therefore, to change settings like this is… well… stupid. And unfair. (Unless of course, it’s some sort of glaring oversight, and 100% of team owners agree to the change… which likely means somebody input a mistake when setting up the league.)
Solution: I think you should pick up wide receiver Jason Moore and then declare to the league that if the commish is allowed to arbitrarily chance league rules mid-season, everybody should have that right. And then announce that your new rule gives 45 bonus points each week to any players who share a name with award winning fantasy football podcast hosts. Fight arbitrary with arbitrary.
// As for the IR spot thing… This feels a bit more sticky. Again: a rule chance like this shouldn’t be unilateral (especially when it’s the commish doing it for his own sake). But these are bizarre times. And as Mike Wright so often says, “We need to keep football fun.” And fair. Which is why these need to be whole-league decisions, not commish decisions. I bring up the “keep-football-fun” bit because:
Preseason, anywhere you turned, people were telling us to add IR spots in case players couldn’t play because of Covid. Then Week 4 showed up and a bunch of players (Pitt/Tenn) suddenly couldn’t play. Because: Covid. But because they didn’t specifically have Covid (or it wasn’t specifically announced that they did) they weren’t IR eligible. Which may feel like an arbitrary difference to many. And arbitrary things like this can be the enemy of fun in fantasy football.
Solution: Be willing to have a conversation about this stuff. One league I’m in is “letting the chips fall how they may”. Another of league was quite disappointed that the entire reason we added IR spots this year was rendered mute because Yahoo decided to arbitrarily (in our league’s opinion) declare that “not being able to play because of Covid” and “not being able to play because you specifically have Covid” are different things. And together as a league we found a few work-arounds that we all agreed would help to keep our league both fair and fun in this bizarre year.